Boris Wilnitsky has this note about the portrait, "Counts Seeau is an old noble family from the Upper Austria. We were able to find on the web information about our sitter. She was born as Eleonora Countess von Seeau, daughter of Reichsgraf Franz Johann von Seeau zu Muehlleuthen and Baroness Maria von Sumerau. In 1796 she married Freiherr (Baron) Konrad Aegyd Soergel von Sorgenthal. She died in 1810."